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Inventor
TORGERSON DAVID E
US
3 patents
Patents
3 patents
US6932268B1
Aug 23, 2005
Dual mode credit card based payment technique
CHECKFREE CORP
135 citations
96
US8005754B2
Aug 23, 2011
Credit card supported electronic payment
CHECKFREE CORP
26 citations
90
US7644036B2
Jan 5, 2010
Credit card supported electronic payments
CHECKFREE CORP
38 citations
90